PBC cooking times

Ok, dumb question, but I'm confused. I'm 4 cooks in with my PBC / uds hybrid and I can't figure out why it seems to be cooking fast.

Since my cooker is closely modeled after a PBC, I am following the PBC cooking times. I am still getting used to the air intakes, but wide open, I am only at 300. With one intake capped, I am at 275ish, 2 capped I am at 230-250. Most time, I am running at 275. Funny thing is that my cook times are consistently faster than instructed. What would cause cooking times to be faster than the PBC recommendation?

I am using kings ford charcoal, lighting the basket according to the instructions, pre heating... I am basically at sea level... I can't figure it out.

I'd love to hear thoughts.

Maybe I'm not being clear. My dilemma is that my temps are lower than most people say the pbc runs, but my cook times are shorter. What gives?

The only way to know for sure is to get a Maverick or iGrill setup, I guess.

Pics

I have been using our oven thermometer that I thought was accurate, but that's a good point.

I am debating a dual probe setup, or maybe just probe the meat and forget about temps..